package cn.edu.sctu;

import java.sql.*;
import java.util.ArrayList;
import java.util.List;

/**
 * Created by Administrator on 2018-5-21.
 */
public class Database {


    public List<User> getUserList() {
        List<User> userList = new ArrayList<User>();

        // 3 + 1
        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;

        String sql = "select * from t_users";

        // 加载驱动程序
        try {
            Class.forName("com.mysql.jdbc.Driver");

            connection = DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/sctu_javaweb_2018?serverTimezone=UTC", // 数据库连接字符串
                    "root",
                    "sctu123456" // 123456
            );

            statement = connection.createStatement();

            resultSet = statement.executeQuery(sql);

            while (resultSet.next()) {

                int id = resultSet.getInt(1);
                String name = resultSet.getString(2);
                String password = resultSet.getString(3);

                User user = new User();
                user.id = id;
                user.name = name;
                user.password = password;

                userList.add(user);

            }
            resultSet.close();
            statement.close();
            connection.close();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }

        return userList;
    }
}
